Berry curvature dipole current in the transition metal dichalcogenides family

Jhih Shih You, Shiang Fang, Su Yang Xu, Efthimios Kaxiras, Tony Low

Research output: Contribution to journalArticlepeer-review

129 Citations (Scopus)


We study the quantum nonlinear Hall effect in two-dimensional (2D) materials with time-reversal symmetry. When only one mirror line exists, a transverse charge current occurs in the second-order response to an external electric field, as a result of the Berry curvature dipole in momentum space. Candidate 2D materials to observe this effect are two-dimensional transition metal dichalcogenides (TMDCs). First, we use an ab initio based tight-binding approach to demonstrate that monolayer Td-structure TMDCs exhibit a finite Berry curvature dipole. In the 1H and 1T′ phase of TMDCs, we show the emergence of a finite Berry curvature dipole with the application of strain and an electrical displacement field, respectively.

Original languageEnglish
Article number121109
JournalPhysical Review B
Issue number12
Publication statusPublished - 2018 Sept 25
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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